FMF

The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology? both internally and externallyShorter overall length that is less susceptible to crash damage and complementary to FMF's Factory...

The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology? both internally and externallyShorter overall length that is less susceptible to crash damage and complementary to FMF's Factory...

Complete systemSuperior power and performance - horsepower improved throughout the rpm rangeFactory forward engineering centralizes mass, improves handling Yamaha -- YFZ 450R 4x2 -- (2010, 2014,...

Hi-Flo end cap boosts all-around performanceComputer designed and dyno-tested for every 4-stroke applicationEnhanced sonic evacuation delivers a higher flow of exhaust gases, which increases powerA...

Hi-Flo end cap boosts all-around performanceComputer designed and dyno-tested for every 4-stroke applicationEnhanced sonic evacuation delivers a higher flow of exhaust gases, which increases powerA...

Hi-Flo end cap boosts all-around performanceComputer designed and dyno-tested for every 4-stroke applicationEnhanced sonic evacuation delivers a higher flow of exhaust gases, which increases powerA...

Hi-Flo end cap boosts all-around performanceComputer designed and dyno-tested for every 4-stroke applicationEnhanced sonic evacuation delivers a higher flow of exhaust gases, which increases powerA...

Fmf Factory 4.1 Rct Exhaust System - Titanium - Carbon End Cap 042406 Kawasaki -- KX 450 -- (2024)

Fmf Factory 4.1 Rct Exhaust System - Stainless Steel - Carbon End Cap 042405 Kawasaki -- KX 450 -- (2024)

Fmf Factory 4.1 Rct Exhaust - Aluminum 042397 Kawasaki -- KX 250 -- (2021, 2022, 2023, 2024); Kawasaki -- KX 250 X -- (2021, 2022)

Superior power than stock systemsAvailable with titanium and stainless steel headersFMF's Factory Forward Engineering centralizes mass and is less prone to crash damageInnovative rear end cap...

Superior power than stock systemsAvailable with titanium and stainless steel headersFMF's Factory Forward Engineering centralizes mass and is less prone to crash damageInnovative rear end cap...